Question

17. ―How about buying Tim 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

Answer 1

17.   A考査动词的时态。句意："为蒂姆买一部手机怎么样啊？ 毕竟，他不再是一个小男孩了。""我认为有必要，因为我们有时候想确认他是否会回家吃饭。"从句中所说的事在说话时是将要发生的事，所以用一般将来时。这里if引导宾语从句，它引导条件状语从句不用一般将来时。