Instead of calling ___ his uncle, he called ___ my new house with his wife that day

Your son doesn’t look__. You’d better have him ___ by a doctor.

We may find that learning a foreign language does not have to be ____learning our mother tonguebut can in fact be as easy [ ]

Since everyone has come back here,＿＿＿.

Not only _____ polluted but ______ crowded.