If the traffic hadn’t been so heavy, I could have been back by 6 o’clock— What a pity! Tina ________ here to see you[ ]

Don’ t worry. A number of efforts are being made ______ the whole system operating normally.

(2013·湖北高考)Don’t defend him any moreIt’s obvious that he ________ destroyed the fence of the garden even without apology

Last weekend I had homework.After finishing it, I felt tired.

It’s importantherto learn a foreign language.