1.He didn't go to school .That's ( ) he was ill.
问题描述:
1.He didn't go to school .That's ( ) he was ill.
2.The message surprised us all ( ) the painting was stloen three years ago.
3.I am not certain ( ) the train will arrive on time.
4.( )he said at the meeting is quite important so please keep it in mind .
5.Go and get your coat. It's ( )you left it .
答
1.He didn't go to school .That's ( because 因为) he was ill.2.The message surprised us all (that ) the painting was stloen three years ago.3.I am not certain ( if / whether 是否) the train will arrive...