问题

To understand the complex situation completely requires more thought than ________ so far

A:gave
B:has given
C:has been given
D:is being given

正确答案是：

同类题型

Where are you going, Sam —There isn’t any ______ in the fridge. I’ll go and buy some.

He always tells funny things to me and always ___________.

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请判断哪一组全是开音节 ______.