1. ---Why didn’t you take a taxi back last night?
---Because I didn’t have any ______ with me.
A. food B. bicycle C. friend D. money
2. Is there any difference between your idea and ______ ?
A. he B. his C. she D. her
3. I am really ______, for I can’t find my backpack.
A. worried B. angry C. disappointed D. fail
4. ______ they may not succeed, they will try their best.
A. Though B. When C. Because D. Unless
