.用括号内动词的适当形式填空1.The problem _____(discuss) yesterday was very important.2.The problem _____(discuss) now is very important.3.The problem _____(discuss) tomorrow is very important.
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.用括号内动词的适当形式填空1.The problem _____(discuss) yesterday was very important.2.The problem _____(discuss) now is very important.3.The problem _____(discuss) tomorrow is very important.
.用括号内动词的适当形式填空
1.The problem _____(discuss) yesterday was very important.
2.The problem _____(discuss) now is very important.
3.The problem _____(discuss) tomorrow is very important.
.用括号内动词的适当形式填空1.The problem _____(discuss) yesterday was very important.2.The problem _____(discuss) now is very important.3.The problem _____(discuss) tomorrow is very important.
1.The problem __discussed___(discuss) yesterday was very important.
2.The problem __being discussed_(discuss) now is very important.
3.The problem __to be discussed___(discuss) tomorrow is very important.
discussed
been discussing
to be discussed
时态的问题、、过去时态、现在进行时态、和将来进行时态、