He ______ here three years ago.
The teachers came for a visit are foreigners.
I my homework, I guess I can't join you.
They will lose the game they try their best,
I didn't hear you because I the news on the radio.
A student in my class said to me, " If I our math teacher, I make math learningeasier and more interesting instead of giving the kids much homework to do every day. "A. were; would B. am; will C. was; could