问题
I was doing my homework _______ a dog came in.
A:/ d /
B:/ t /
C:/ d /
D:/ t /;
B:/ t /
C:/ d /
D:/ t /;
正确答案是：
同类题型
Who is the girl in pink— ________ is our new classmate who often helps ________ with our English.
Last year John earned________his brother did，who has a better position in a bigger company.
Every minute must be made full use of spoken English.
Is Tom at school today— No, he is at home ______ he has got a badcold.