I would appreciate ______ if you could write to me as soon as possible.

________ with the size of the whole earth, the biggest ocean does not seem big at all.

It was ______ back home after the experiment.

The book about environment ______ the importance of protecting the earth.

Lydia doesn’t feel like ________ abroad. Her parents are old.

It is in the hotel _____ he stayed last night ______ he lot his mobile phone.

Tom was about to close the window ______ his attention was caught by a bird.

His pale face suggested that he _____ ill and his teacher suggested that he ______to the hospital at once.

He always brings me a pretty gift _______ he comes to visit me.

According to a report, cigarette smoking ______ in all indoor public places in our city next year.

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