We asked Tom and Mike, but ________ could offer any help.
A.both | B.all | C.none | D.neither |
Another type of pollution, ______ thermal pollution (热污染), is caused by fuel-burning.
A.calling | B.called | C.to call | D.calls |
They had great difficulty ____ the people ____ in the fire.
A.in rescue, trapping | B.to rescue, trapped |
C.in rescuing, who trapping | D.rescuing, trapped |
It was midnight _____we reached the station.
A.that | B.when | C.on which | D.which |
When he turned professional at the age of 11, Mike _____ to become a world champion by his coach and parents.
A.expected | B.was expecting |
C.was expected | D.would be expected |
In some countries where there is not enough coal, water is used to ____ electricity.
A.making | B.make | C.be made | D.being made |