A few years ago all of them were classed ____ plants.
A: for
B: as
C: to
D: into
第2题
It is _______ to tell which is earth and which is sky.
A: enough easy
B: easily enough
C: easy enough
D: enough easily
第3题
Man: English is a difficult language to learn.
Woman: ______
A: I think the grammar is easy.
B: It's not very difficult to learn.
C: I've found it very easy.
D: True, but the grammar is quite easy.
第4题
You may look at a group of cows ____ under the trees.
A: stood
B: stands
C: standing
D: to stand
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