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.
