---Why is the classroom so dirty?
--- Sorry, sir. It ______ yesterday. We forgot to do it.
| A．doesn’t clean | B．didn’t clean | C．isn’t cleaned | D．wasn’t cleaned |
----Do you mind if I sit here? ----________. It’s for Mr Brown.
| A．Not at all. | B．Never mind. | C．Better not. | D．Of course |
Never stand up ________ you are asked to.
| A．if | B．since | C．unless | D．when |
____ Lily ______ Lucy may go with you because one of them must stay at home.
| A．Not only ... but also | B．Both ... or |
| C．Both ... and | D．Either ... or |
Which _______ your brother ________, apples or bananas?
| A．does; prefer | B．would; rather | C．does; prefer to | D．would; rather than |
| Andy has __________for five years. Five years _______ a long time. A .left home, is B. been away from home, is C. left home, are D. been away from home, are |