1£®There is nothing to do, I __may/might__ as well go to bed.

2£®The president is reported __to_have_gone__(go) to Shanghai to take part in an important meeting yesterday.

3£®They said they __would_meet__(meet) us at 10£º30 tomorrow morning at the station.

4£®Sorry I'm late.I might have turned off the alarm clock and __gone__(go) back to sleep again.

5£®The boy __can't_have_finished__(finish) reading the book so soon because it is difficult even to an adult.

6£®You __needn't_have_watered__(water) the plants, for it is going to rain.

7£®A computer can't think for itself.It __must_be_told__(tell) what to do.

8£®It __must_have_rained__(rain) last night, for the road was quite muddy.

9£®The lights were out.They __must_have_been__(be) asleep.

10£®I raised objections at the meeting, but now I would rather __not_have_done__(do) that.