题文
It isn't easy for us ______ English well．（ ）
| A． |
learn |
B． |
learns |
C． |
learning |
D． |
to learn |
It isn't easy for us ______ English well．（ ）
| A． |
learn |
B． |
learns |
C． |
learning |
D． |
to learn |
试题篮
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