You______have been more careful!A．mustB．couldC．wouldD．need

You should have been more patient ________ 怎么选择

Had Judy been more careful on the maths exam, she ______ much better results now.[2008]A．w

If the captain ____more careful, his ship would not have been sunk.A．should beB．were to be

In doing experiments, you must be ______ the precision instruments.A．more than careful wit

You should take care that you have not ________ any detail in the design. A：disappeared

I hope that you 11 be more careful in typing the letter: dont______anything.A．lackB．withdr