选出与所给句子划线部分意义相同或相近并能代替的那一项。

1. Sometimes the boy offends the other students. [ ]

A. angry

B. annoys

C. cheer up

D. frustrates

2. My friend and I have a lot in common. There are still some differences between us, though.  [ ]

A. but

B. although

C. however

D. therefore

3. Do you know the singer with beautiful glasses?[ ]

A. wearing

B. who wear

C. putting on

D. has

4. I have worked all day, now I'm dog-tired. [ ]

A. not tired

B. relaxed

C. very tired

D. relaxing

5. At school we take exercise for an hour every day to build us up.  [ ]

A. cheer us up

B. make us happy

C. change us

D. make us stronger