---Alice, you look puzzled, Have you understood it?
---Yes．I _____another problem just now．
| A．l have thought of | B．am thinking of |
| C．had thought of | D．was thinking of |
相关试题
Who else except a millionaire could ________ to use such an expensive car?
| A．pay | B．spend | C．buy | D．afford |
Jack ______ the bus as soon as it stopped; and then to his joy he met an old friend of his on that bus.
| A．got on | B．got into | C．got off | D．got out of |
I know I didn’t forget ________ my camera with me because I clearly remember ________ it in my bag.
| A．taking; to put | B．to take; to p ut |
| C．to have taken; putting | D．to take; putting |
— It’s burning hot today, isn’t it?
— Yes. ________ yesterday.
| A．So was it | B．So it was | C．So it is | D．So is it |
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