When the teacher came into the classroom, all of us __________ the classroom.A. are cleaning B. were cleaning C. cleanedD are cleaned
It’s quite clever ________ you _______ out the problem.
---Tom, you play football in the street. ---Sorry, Ido it again.
Not only Mr. and Mrs. Green but also their daughter ________ abroad twice.
Could you tell me ____________ a meeting in Guangzhou next week?
He speaks _________English _______ French .Instead ,he speaks German.