If buildings fall down with people inside,the snake robots can help________people under the buildings.
A.take up B.look for C.cut up
—Have you ever________to Caozhou Peony Garden?
—Yes,I________ there last year.
A.been;went B.gone；went C.been; gone
China is almost as ________ as the US, and it is the ________ country in Asia.
A.big；bigger B.big；biggest C.bigger；biggest
—Look! This restaurant is always crowded.
—The food here ________ be very delicious. Let's go and have a taste.
A.need B.can't C.must
—How do you improve your________ ?
—By listening to a tape and repeating out loud.
A.pronunciation B.environment C.invention
―What's________matter,Nancy?
—I have ________sore throat.
A.the；the B.the；a C./; a
