Small sailboats can easily turn over in the water ______ they are not managed carefully.
| A．though | B．before | C．until | D．if |
That is your school, ___________?
| A．isn’t that | B．mustn’t it | C．isn’t it | D．won’t it |
You must have been there, ____________?
| A．have you | B．did you | C．haven’t you | D．didn’t you |
What a lovely day, _________?
| A．doesn’t it | B．hasn’t it | C．won’t | D．isn’t it |
There used to be a church behind the cemetery, _____________?
| A．didn’t there | B．used there | C．usedn’t it | D．didn’t it |
There isn’t going to be a volleyball match next week, __________?
| A．is it | B．isn’t it | C．is there | D．isn’t there |