Unless he (sell) more, he won't get much commission.
A. sells
B. sold
C. sell

Let's go swimming, ..........?
A. will we
B. shall we
C. do we

Jane never goes out at the weekend, ..........?
A. is she
B. does she
C. doesn't she

Unless he (sell) more, he won't get much commission.
A. sells
B. sold
C. sell

If he (be) late, we'll go without him.
A. was
B. is
C. be

What will happen if my parachute (not open)? 
A. doesn't open
B. opens
C. don't open

The table will break if you (sit) on it.
A. sits
B. sit
C. will sit

If I see him, I (give) him a lift.
A. giving
B. will give
C. gives

10,11 nhé

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Diện tích toàn phần của hình lập phương có cạnh 2 cm là

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