_______ is expected, according to the online survey, that housing prices can’t go up any more.
—I think I'll give Bob a ring.—You ______. You haven't been in touch with him for ages.
______ about wild plants that they decided to make a trip to Madagascar for further research
Unlike watching TV, reading is a highly active process _______ it requires attention as well as memory and imagination.
---- Don't you think it necessary that he _______ to Miami but to New York?---- I agree, but the problem is ________ he has refused to.
The place _______ the bridge is supposed to be built should be ________ the cross-river traffic is the heaviest.