— The teacher asked us ________________
A. What the bad effect of pollution are.
B. What were the bad effect of pollution.
C. What the bad effect of pollution were.
I have been to London. I ____________ there last month.
| A．go | B．went | C．have gone | D．will go |
—Who listens _________, Eric , Brad or Rick?
—Of course Brad.
| A．the most carefully | B．more carefully |
| C．the most careful | D．more careful |
– does your father go to work?
-- By bus.
| A．How | B．What | C．When | D．Where |
—Mum, I can't find my football.
—Hurry up! Your father ______ for us.
| A．is waiting | B．waited | C．waits | D．will wait |
_________ play in the street．It’s very dangerous．
| A．Do | B．Not | C．Don’t | D．Doesn’t |