问题
After retirement, learning a musical instrument may be harder than ______ when you were a kid.
A:it may
B:it was
C:it does
D:it did
B:it was
C:it does
D:it did
正确答案是：
同类题型
He warmly congratulated them on _____ theyhad achieved in science and technology.
is widely acknowledged thatthere is life, there is hope
Once we discover to crefor economicdevelopment.
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________nice weather it is! Let’s go out for a walk, shall we?