30.—Peter looked tired and a little absent-minded at the meeting. —He _____ up too late.
---________by the chemistry teacher for not finishing homework independently makes him feel very shameful. ---Yes. But he told me this morning he would spare no efforts to be the top one in our class.
So absorbed ________ in the research that she didn’t hear someone knocking at the door.
______ you do the experiment carefully, you would make discoveries others wouldn’t make.
We had to the match as the ground was too wet to play on.
It was 1995 __________ we began to develop the new computer system.