--______is waiting for you . He wants to say hi to you. --Oh! That’s Roy again ! He does it__________.
I am sure that you’ll ______ the difficulty.
They have been skating______ 2 hours ago.
----Why don’t you go to the movie with me?-----Because I _______it already.
____ useful the computer is!
Do you remember what ____ at 11:00a.m yesterday?