Do you think the phone is genuine(真品)? —I don’t think it ______ be a fake, as this shop has a very good reputation.

The young lady from Australia has a gift for creatingan atmosphere for her students _________ allows them to communicate freely witheach other.

The science of medicine, _______ progress has been very rapid lately, is perhaps the most important of all the sciences.

What language does the woman speak——She speaks . She’ s from Australia.

The teacher encourages her students _____ English as much as possible.