—How about buying Sam a mobile phone? After all, he isn’t a boy any more.
—I think it’s necessary, for we sometimes want to make sure if he ______home for dinner.
| A．will come | B．comes | C．has come | D．would come |
we can not figure out ____quit a number of insects ,birds ,and animals are dying out .
| A．that | B．as | C．why | D．when |
The road is covered with snow. I can’t understand ________ they insist on going by motor-bike.
| A．why | B．whether | C．when | D．ho |
--Do you mind if I smoke here?
--____________.
A. Sure. Go ahead B. No. Go ahead C. Yes. Please
I hope there are enough glasses for each guest to have___________.
| A．one | B．不填 | C．them | D．to |
Nobody believes him ____________ what he said.
| A．even enough | B．in spite of | C．no matter | D．contrary to |