问题

They were walking along the shore _______ a huge wave appeared out of nowhere, sweeping them out to sea

A:as
B:while
C:when
D:though

正确答案是：

同类题型

“How long does it take you ________to Beijing” “More than three hours.”

Why not the dancing — That’s a good idea. Let’s them.

I just wonder ____ that makes him so excited.

Some fans, _____ money was a big problem, could not afford to go to the concert to see their star play.

The young couple had a quarrel last night and neitherof them would give in to ______