The ________ look on her face suggested that she _________ it.
| A．puzzling; hadn’t expected | B．puzzled; hadn’t expected |
| C．puzzling; wouldn’t expect | D．puzzled; shouldn’t expect |
__________ most efficient way to understand thousands of new words is to gain __________ good knowledge of basic word formation.
| A．A; a | B．The; / | C．A; / | D．The; the |
—Can you help me with the math problem, Dad? ___________.
—OK, let me think it over.
| A．I’m fed up with it | B．I’m stuck |
| C．I didn’t get it | D．I can’t find it |
— Oh, my God，I left my portable computer in the taxi!
— ______. Let’s call the taxi company first．
| A．Pray for it | B．Cheer up |
| C．Forget it | D．Calm down |
---______ he managed to solve the problem?
---Oh，he turned to Professor Lee for advice.
| A．Was it how that | B．Was it that how |
| C．How was it that | D．How it was that |
-----_________ you interrupt now? can’t you see I am on the phone?
---- Sorry Sir, but it’s urgent.
| A．Can | B．Should | C．Must | D．Would |