问题

Where have you _ all day —I came back at noon and I _ inthis room ever since.

A:gone; had been
B:gone; was
C:been; have been
D:been; am

正确答案是：

同类题型

From facts, scientists have that more energy is being absorbed from the sun, throwing the earth’s energy “out of balance”.

(2013·高考江西卷)He wrote a letter________he explained what had happened in the accident.

What do you think of the reason _______ he mentioned at the meeting _______ winning this competition?

Students are always interested in findingout _______ they can go with a new teacher.

－Why are you lookingso worried Is there anything I can do for you－The computer breakdown when I nearly finished my composition.