— I think it was a____ trip . — Well, we all had a good time. A.sad B.pleasant C.difficult
She looks very busy . I want to help her , but I don't know ___________ .
I think math is as __________ as English .
I believe my dream _________ true in the future .
---Will people live to be 300 years old ? --- ______________ .
While my mother________ some washing, I was making a kite for Mary.