think
- .I think ___ necessary ___ a foreign language.
- ___, I think, and the problems could be settled.
- ____ could do such thing?
- ______ Mary found her lost pen the day before yesterday?
- ______ will be our teacher of English in the coming year?—Mrs. White, I guess.
- ________, I think, and the problem could be settled.
- ________, I think, and the problem could be settled．
- _________ ?—I’m not sure, but he might have been ill in bed.
- ___________ we should do to protect wildlife?
- _______is the best football player in your city? —Jerry.