—Did you enjoy your tour around Beijing， Mr Singh？
—Yes. But I hate when the tour guide held out his left hand to shake hands with me.
| A． one | B．that | C．it | D．this |
All the scientific evidence ______ that increasing use of chemicals in farming______damaging our health．
| A．show; are | B．shows; are |
| C．show; is | D．shows; is |
It is required that the students _____ mobile phones in their school, so seldom _____them using one．
| A．should not use; you will see |
| B．mustn’t use; will you see |
| C．not use; you will see |
| D．not use; will you see |
Nuclear ______ be really dangerous at times even though it’s a nice energy in general．
| A．shall | B．should | C．can | D．Must |
When reading English novels, I often idiomatic expressions that I can't understand．
| A．come across | B．go over |
| C．get across | D．take over |
Hardly _ when they realized that it was too late to catch the last train．
| A．the clock had struck twelve |
| B．the clock had been struck twelve |
| C．had the clock been struck twelve |
| D．had the clock struck twelve |