Clothing made of man-made fibers has certain advantages over ______ made of natural fibers like cotton,wool or silk.
I tried phoning her office, but I couldn't __________.
Jane is very popular because she is easy to __________.
__________ a strange plant! I've never seen it before.
Who do you think you'd like __________ with you, a boy or a girl?
— __________ Emily is in such a hurry? —I don't know. She might run to catch the bus.