问题

Scientists are trying their best to_______ ways to treat the terrible disease caused by Ebola(埃博拉）．

A:come up with
B:look forward to
C:talk about
D:give up;

正确答案是：

同类题型

I’m going to Qinghai for a holiday tomorrow.–________.

Honey, this is a present for your birthday.——Ah! A pair of shoes, a well-known brand—Nike! I think it must _______ comfortably

they’ve promoted Tom, but hedidn’t mention _____ when we talked on the phone.

When the teacher speaks, we have to keep quiet, ?

Where did you find your wallet? —–It was in the park _______ we went for a walk yesterday.