_______ necessary for us _______ English well.
A. This is; to learn B. It’s; to learn
C. It’s; learn D. That’s; learn
—Watching TV too much _______ bad for your eyes.
—I’ll go to bed right away.
A. isB. areC. wasD. be
---Would you mind ______ the door? It’s cold outside.
--- OK. I’ll do it right now.
A. opening B. no opening
C. closing D. not closing
---Is doing morning a good habit? ----Yes, it is.
A. exercise B. exercises
C. exercising D. exercised
It’s my ___________ time to go to Beijing. I never went there before.
A.twoB. secondC. oneD. first
I get _____ flu. I should see a doctor at once.
A. a B. / C. the D. an
