_____ that air conditioners cause so much pollution, I would never have bought one.
| A.Had I known | B.I had known | C.Were I to know | D.Did I know |
Human facial expressions differ from those of animals in the degree __________ they can be controlled on purpose.
| A.with which | B.to which |
| C.of which | D.for which |
Chan’s restaurant on Baker Street, __________ used to be poorly run, is now a successful business.
| A.that | B.which |
| C.who | D.where |
Those successful deaf dancers think that dancing is an activity __________ sight matters more than hearing.
| A.when | B.whose |
| C.which | D.where |
It is reported that two schools, __________ are being built in my hometown, will open next year.
| A.they both | B.which both |
| C.both of them | D.both of which |
Today, we’ll discuss a number of cases __________ beginners of English fail to use the language properly.
| A.which | B.as |
| C.why | D.where |