问题

Let those in need _______ that we will go all out tohelp them.

A:to understand
B:understand
C:understanding
D:understood

正确答案是：

同类题型

There used to be lots of fish in thelake.— Yes, but there are very __________ now.

John plays the piano _____, if not better than, David. But he never shows off in public.

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TV is short________television，while we can use km________kilometer.[ ]

tor is skilled at treating heart trouble and never accepts any gift from hispatients, so he has a very good_____.