.（上海卷28）. Every few years, the coal workers. their lungs X-rayed to ensure their health.
| A．are having | B．have | C．have had | D．had had |
She went to American two years ago .She ____there for half a year and then went to Japan.
| A． would work | B． worked | C． would be working | D．has been working |
China’s economy expanded 8.1 percent in the first quarter from a year earlier,___the slowest pace in almost three years.
| A． marking | B． to mark | C． having marking | D． marked |
So diffcult____it to fit in at school that she decided to drop out.
| A．found she | B． did she find | C． she found | D． she did found |
Wait for a while .I will get you something to drink.
Don’t ____.I have to leave now.
| A． worry | B． interrupt | C． disturb | D． bother |
This is the second time I____a call from that telephone number.
| A． have received | B． had received | C． received | D． receive |