You’ve been so kind to us that we will always be deeply _____．

       A．out of debt       B．in your debt      C．in trouble           D．in danger

 His illness _____ his absence．

       A．showed          B．accounts for        C．explains         D．gives out

 —I’ve studied growing plants as one of my interests．Could I make some suggestions?

       —___________．

       A．You will make it                           B．Go right ahead

       C．Don’t mention it                           D．Take it easy

 —You’re always working．_____, let’s go shopping．

       —All you ever want to do is going shopping．

       A．Take your time                           B．Don’t worry

       C．Come on                                D．Take it easy

 The computer system _____ suddenly while he was searching for information on the Internet．

       A．broke down                                     B．broke out         C．broke up         D．broke in

 Leaders of many countries have been trying to _____ what it is that makes China develop so fast．

       A．carry out       B．figure out         C．break out        D．watch out

 We can see the blue sky and the shining sun．There is no possibility _____ it will rain or snow today．

       A．which         B．where           C．that           D．whether

 He must have finished his homework for a long time, _____ he?

       A．mustn’t        B．didn’t            C．needn’t        D．hasn’t

 We saw many students playing on the playground, most of them _____ girls．

       A．are             B．being             C．were          D．have been

 The murderer was brought in, with his hands _____ behind his back．

       A．being tied          B．having tied         C．to be tied        D．tied