__________ good exercise.
| A．Climbing hills is | B．Climbing the hill is |
| C．The climbing hills are | D．The climbing of hills are |
____on Monday night that all this happened?
| A．Is it | B．It is | C．Was it | D．It was |
It was in the school____he had studied____he began the important experiment.
| A．that;where | B．inwhich;which |
| C．where;that | D．where;inwhich |
It is the teacher____taught me when I was a child____I am going to visit.
| A．that;which | B．who;which | C．who;that | D．whom;that |
She won’t leave the TV set,____her husband is waiting for his supper.
| A．as though | B．even though | C．whether | D．whenever |
— ____make she different from the othe rstudents?
—Honesty,Ithink.
| A．How is it that | B．How is that | C．What is it that | D．What it is that |