—Those scientists invented a robot to care for kids! —It’s not surprising．They ___

—Those scientists invented a robot to care for kids! —It’s not surprising．They ____ wonders all the time．

#103461

worked

were working

work

have been working

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(2014·日照模拟)The young man was modest and worked hard，and gradually managed to________his status.

#99127

take up 　

bring up

build up　

put up

We first met on a train in 2000. We both felt immediately that we ______ each other for years.

#104080

knew

have known

know

 Since last year I____ him only once.

#103740

have seen

have been seeing

see

was seeing

---- ___ leave at the end of this month. ---- I don’t think you should do that until ___ another job.

#100702

I’m going to; you’d found

I’m going to; you’ve found

I’ll; you’ll find

I’ll; you’d find

—Why didn’t you answer my phone at 10 am? —I           for my decayed tooth in the clinic.

#102804

treated

was treated

have been treated

was being treated

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