Little ________ that we were watching his every move，so he seemed to be going his own way in this business.
| A．he realized | B．he didn't realize |
| C．didn't he realize | D．did he realize |
Peter must be ill. It’s the only thing that can _________ his strange behavior.
| A．lie in | B．result from | C．account for | D．explain about |
. He was hit by a falling tree that night and killed ____________.
| A．on the spot | B．in a spot | C．under the spot | D．on a spot |
. ---- Excuse me, Madam. I wonder if this bus goes to the East Lake?
---- ___________. You should take Bus No. 521.
| A．Sure, it does | B．No, it isn’t |
| C．Oh, sorry, I’m afraid not | D．What a pity! It’s not true |
Unless you work as hard as you can, you won’t ______ your classmates.
| A．fall behind | B．keep on with |
| C．keep up with | D．catch up |
Don’t eat too much chocolate, or you can ______ weight quickly.
| A．put into | B．put out | C．put up | D．put on |