He made a(n)______ that he would buy a large house for his parents when he became rich.

do you think of the price of thesecomputers— They are at least equal in price to, if notcheaper than, ____at the other companies

Is your father a teacher? —well, he _______.

model train is this—I think it’s Mike’s. Look, his name is on it.

We are looking forward to ____________ the Great Wall.