Those natives who _________ move from place to place with their animals in the past have moved into new houses at last.
_______ is expected, according to the online survey, is _______ the price of housing will not go up any more.
-----Alice, you clean the blackboard today, _________? ----- But I cleaned it yesterday.
---- Why is the cake so expensive? ---- Maybe you don’t know a cake made of wheat costs less than _____ made of rice.
I _____ sooner but I didn’t know that they were waiting for me .
Experiments of this kind ___in both the U.S and Europe well before the Second World War