Câu hỏi:

My sister hair isn't _______

My shoes are dirty. I’d better take them ________before I come in.

Mary’s eyes are weak, __________, she has to wear glasses.

Our energy will soon come to an end if we don’t__________ it.

Of course as a student I want _____ all the exams.

What _____ of learning English do you find most difficult? Is it grammar rules or speaking?

The children like to put ___________ nice clothes when they go out.