--- Jenny, ________do you visit your grandparents?
--- Twice a month.
| A．How long | B．How soon | C．How often | D．How many |
_____ the one-child policy, now our country’s population isn’t growing so fast.
A. Thanks for B. Thanks to C. Because
----Do you know why he left so early?
----___________ for the English test, I guess.
A. Study B. Studying C. To study
There are lots of English books here, and ________ of them is easy to understand.
A. allB. every C. each
The cake is delicious, and I would like ___________ one.
A. a second B. the second C. second
You should do more ___________ instead of sitting at the desk busy doing your _________.
A. exercise; exercisesB. exercises; exerciseC. exercise; exercise