Even though computer screens don’t radiation, the stress from staring over long periods can cause harm to your vision.
| A．give off | B．give in | C．give up | D．give away |
--- I’ll tell Mary about our changes tomorrow.
--- What? You ______ her yesterday.
| A．ought to tell | B．must have told | C．might have told | D．should have told |
At the United Nations Climate Change Conference, the UN Secretary General pointed out that, ______, the climate situation would get worse and worse.
| A． | if not dealing with properly | B． | unless dealing with properly |
| C． | if properly dealt with | D． | unless properly dealt with |
--- I will come to your lecture at 10:00 am. tomorrow.
--- I’m sorry. By then my lecture ______ and I ______ my guests in my office.
| A．will end; am being met | B．have ended; will meet |
| C．will have ended; will be meeting | D．will have ended; will have met |
______, I have to put the book away and focus my attention on study this weekend.
| A．However the story is amusing | B．No matter how amusing is the story |
| C．However amusing is the story | D．No matter how amusing the story is |
He called another girl, ______ was more suitable for the position.
| A．he believed | B．who he believed | C．he believed she | D．whom he believed |