1. We shall ________（保卫） our motherland，whatever the cost may be.
2. The museum had several paintings ________（代表） the artist’s early style.
3. The boy looked at me ________（好奇地）as if I were a complete stranger.
4. He is fluent in _______（口语的） English，but is not good at written English.
5. The machine will not ________（运转） properly if it is not kept well oiled.
