—What time do we have to be at the gate of the museum?  —______ the visitors begin to check in.

—I thought he hated TV.—You are right, ______. he still watches the program.

The ________ fact is that some European countries are heavily in debt, ________China’s economy is generally in good shape.

In spite of the thunderstorm, the children slept _____ all night.

As is known to all language learners, the newly learnt words will soon be forgotten unless______ used in everyday communication.