It is very dangerous for them to swim in this river.
Whom did you find outside when you opened the door?
wonn't he?
Linda's grandfather died at the age of fifty-two.
Did your father often help your mother with the housework during those days?
肯定全队，不懂问我
1.It is dangerous to swim in this river.
2.Who did you find when you opened the door?
3.Jim will be unhappy,won't he?
4.不清楚,sorry~
5.Did your father often help your mother with the housework during those days?
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