oh,hi
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Mandy: Hi Matt. How are you? What (1)..........have you been doing................(you / do) recently?
Matt: Oh, hi Mandy! Well, (2)......I have been studying.....................(I / study) for my exams.
Mandy: That sounds boring! (3).....have you been working......................(you / work) hard?
Matt: Very! Basically, (4)............I have just been sitting...............(I / just / sit) at my bedroom for the past three weeks and (5).....I haven't been going.................(I / not / go) out at all. (6)..........I have been working.........(I / work) with Michael, my best friend, some of the time, though, so at least I've had some company. How about you?
Mandy: Well, my mum and (7).........I have been painting............(I / paint) my bedroom for the last few days. That has been fun! And (8)...we have also been planning...............(we / also / plan) our summer holiday.
Matt: Great! Where are you going?
Mandy: Well, we haven't decided yet. (9)...........we have been looking.................(We / look) at different places to see which we like best.
Matt: I'm sure you'll have a great time, wherever you go. Oh, by the way, (10)........I have been thinking..............(I / think) of having a party when I finish my exams. Would you like to come?
Mandy: Sure! That would be great!
Refer:
Cre: Ngố
Mandy: Hi Matt. How are you? What (1)............have you been doing..............(you / do) recently?
Matt: Oh, hi Mandy! Well, (2)..............i have been studying.............(I / study) for my exams.
Mandy: That sounds boring! (3)...........have you been working................(you / work) hard?
Matt: Very! Basically, (4).........i have just been sitting..................(I / just / sit) at my bedroom for the past three weeks and (5)......i haven't been going...............(I / not / go) out at all. (6).........i have been working..........(I / work) with Michael, my best friend, some of the time, though, so at least I've had some company. How about you?
Mandy: Well, my mum and (7).........i have been painting............(I / paint) my bedroom for the last few days. That has been fun! And (8).......we have also been planning...........(we / also / plan) our summer holiday.
Matt: Great! Where are you going?
Mandy: Well, we haven't decided yet. (9)....we have been looking........................(We / look) at different places to see which we like best.
Matt: I'm sure you'll have a great time, wherever you go. Oh, by the way, (10)..........i have been thinking...........(I / think) of having a party when I finish my exams. Would you like to come?
Mandy: Sure! That would be great!
H nằm giữa O và I nên:
OH + HI = OI (1)
Mà HI = \(\frac{2}{3}\) OI => HI = 6 . \(\frac{2}{3}\) = 4 (cm)
Tahy vào (1) ta có :
OI + 4 cm = 6 cm
=> OH = 2 cm

hello my friend🥰🤣