Jerry has promised to keep the secret, so he won’t tell anyone even though.

David hasn’t come yet. —-I think he will soon, for he means what he says.

cher praised me for _____ progress I’d made,which was ____ great encouragement to me.

Some scientists think that it may take ______ years to make robots look like people, and do the same things as us.

Hello, Mike. Long time no see. Where are you —Oh, not only my father but also I ________ Wuhanfor a month.