She has some trouble _____ out the math problem.
| A．work | B．to work | C．working | D．Works |
相关试题
根据句意，用括号内所给单词的适当形式填空。I think our school is ___________ (real) beautiful.
I don’t know him well. I only meet him ________ (two).
We can keep __________ (diary) every day. It’s interesting.
— Whose room is this?
— Oh, it’s those _______ (play).My grandparents often go _______ (walk) for half an hour after supper.
— I am going to the Great Wall next week.
— _______.
| A．That's OK | B．That's right |
| C．Have a good time | D．Thank you |
— _______ does your brother go shopping?
— Sometimes.
| A．How often | B． How long |
| C．How | D．How many times |
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