问题
Why didn’t you go to play football with us yesterday afternoon—I my mother with the housework then.
A:helped
B:was helping
C:had helped
D:have been helping;
B:was helping
C:had helped
D:have been helping;
正确答案是：
同类题型
Dad,there is a snake at the gate crawling this way.-Don’t __________,boys；there’s no danger.[ ]
_and short of breath, Andy and Ruby were the firstto reach the top of Mount Tai
People all over the world are all ______ about the relationship between China and Japan.
It was not until I was injured in acar accident ______ the real American society．
We should never forget those who________the success of the revolution. [ ]