Trees ________ every year to make our city greener.
I must return the dictionary to Allen now. I _____ it for three weeks already. A. kept B. will keep C. have kept
— Is Miss Li in the office?— No, she ______ the classroom.A. has gone to B. has gone C. has been to
— Have you had your lunch _____? — Yes, I have ______ had it.A. already; yet B. yet; already C. yet; yet
— How long may I _____ your MP4 player?— At most four days.A. borrow B. keep C. lend
I’ll come to see you again ______ a week. A. after B. later C. in