You were mistaken ____Jane，she really wanted to help you.
—I admit that I mistook her offer______ a threat. Anyhow，I don’t like the way she acts.
| A．about; to | B．for; as | C．about; for | D．in; for |
—Why are you so busy these days?
— We_____trees. Why not join us？
| A．have planted | B．will plant |
| C．are planting | D．planted |
After the argument Colin ran away and______since.
| A．isnt heard of | B．wasn’t heard of |
| C．hasn’t been heard of | D．hadn’t been heard of |
The door is open but nobody is in. Mary______have forgotten to lock the door.
| A．should | B．must | C．would | D．could |
________I like Carter personally, I don’t think what he’s doing is right.
| A．If | B． As | C．While | D．Unless |
—Would you mind helping me with my suitcase?
—.________
| A．I hope so | B．Not at all |
| C．That’s nothing | D．Go ahead |