X Fill in the each gap with an expression in the box.

1. Be careful! The _____________ says “No U-Turn”.

2. You ran through the stop sign. May I see your ________________, please?

3. It is the law that motorists give way to pedestrians at _______________.

4. You can book your _______________ online, by phone, or through a travel agent.

5. Slow down – the _______________ on this road is 60 mph.

6. We were stuck in a _______________ on the freeway for two hours.

7. When we got to the _______________ the train had left.

8. What _______________ did they use at that time? – horses

9. _______________is taught to young children to avoid road accidents.

10. You should wear a _______________ when riding a bike

Question 2:
The number of factors of 120 is

Question 5:
Find four integer numbers a,b,c,d such that
a + b + c + d = 1
a + c + d = 2
a + b + d = 3
a + b + c = 4
Answer: (a;b;c;d)=() 

Question 6:
The 215^th  term of the expression A=1-7+13-19+25-31+⋯ is

Question 7:
A natural number will be increased by 9 times ifthe digit 0 is written between tens digit and units digit.The number is

Question 8:
Calculate: 1×2+2×3+⋯+100×101=

Question 9:
The root of the equation (x+1)+(x+2)+(x+3)+⋯+(x+100)=5750 is x=

Question 10:
The sum of digits of 3¹⁰⁰⁰ is A,the sum of digits of A is B,and the sum of digits of B is C.The value of C is