问题

Tom has been here ______ just one year, but his father has worked here ______ ten years ago.[ ]
A: since; for
B: since; since
C: for; since
D:for; /
B: since; since
C: for; since
D:for; /
正确答案是:
同类题型
. As a volunteer, he often goes to the hospital to ________ the sick.
People, especially teens, think it_______ great fun to surf on________ Internet. — I agree with you.
I_______ watch Happy Goat and Big Big Wolf because I don’t think it’s so interesting.
Dick, it’s the _______ time in three days that you _______ the same mistake.