Don’t leave the baby at home _____. It’s very _____.
-- Excuse me, sir, smoking in the gas station. -- Oh, I'm really sorry. A. doesn't allow B. isn't allowed C. aren't allowed
-- The boy can speak both English and Japanese ______ he is only ten. -- Wow, what a clever boy! A. if B. because C. though
---Nick, would you mind out of the bathroom? --- Sorry. I won't be long. A. come B. to come C. coming
-- does your cousin go to the gym? -- Twice a week. A. How long B. How often C. How soon
-- Is that girl Susan? -- It ______ be her. She left for Beijing yesterday. A. needn't B. can't C. mustn't