Listen, our teachers ______ Red Songs in the next room.
A. sang       B. are singing       C. sings

I_______ my homework at nine o’clock last Sunday morning.
A. am doing     B. was doing                  C. do

—My sports shoes are _____ out.
—How long have you_____them?

I met a good friend of mine while I     on the street.

— Please turn off the radio, grandma ___now.
—OK, I’ll do it right now.
is sleeping B. will sleep C. slept D. sleeps

—China develops so fast.
—That’s true. It ______ a lot already.

Listen! The phone ＿＿＿. Please go to answer it.

The computer is broken. ＿＿＿ it＿＿＿ today?

— I called you at nine this morning, but there was no answer.
— Oh, sorry, I ______ with my sister in the shopping center.

He __________a basketball，but a baseball．