It was _____ that caused him to serve dinner an hour later than usual.
| A．we being late | B．our being late | C．we were too late | D．because we were late |
— Marx looks nervous.
— So you if you had so fierce a competition.
| A．do | B．did | C．will | D．would |
caused the accident is still a mystery.
| A．How | B．What | C．That | D．Where |
______ you are alone at home, why don’t you go with us to the party?
| A．Even though | B．As though | C．So that | D．Now that |
Can you ___me to call Mr. Smith this afternoon? You know how forgetful I am.
| A．permit | B．persuade | C．remind | D．allow |
It was quite ___accident that I met him; he was homeless and ___rags at that time.
| A．by; in | B．on; in | C．at; by | D．in; in |