______ is dangerous for children to swim in the river alone.
| A．It | B．That | C．This | D．He |
相关试题
Bad luck! We missed the early bus. , it kept raining the whole morning.
| A．However | B．In fact |
| C．Moreover | D．Otherwise |
—I hear your father ________ to America once.
—Yes. He ________ there last year.
| A．has been; went | B．went; has been |
| C．goes; went | D．has been; has been |
—Do you mind me smoking here?
—_______. Look at the sign. It says, “No smoking.”
| A．It isn’t important | B．You’d better not |
| C．No, I don’t | D．Never mind |
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