问题

er becomes increasingly scarce in decades______, water shortage will become a hot issue all over the world.

A:coming
B:having come
C:to come
D:to be coming

正确答案是：

同类题型

I have some big news for you. You’ve beenaccepted as a member of our club.—______ That’s great!

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There’s lots of white snow but there aren’t ______ tourists.

Where’s your father, Linda–He’s cleaning floor.

mobile phone was left in a taxi accidentally,_____ again.