2. ---I hear Sam has gone to Qingdao for a holiday.
---Oh, how nice! Do you know when he_______?
A. was leaving B. has left C. left D. leaves
3. “Wechat”(微信) really makes a great _______ to people’s life. It’s easy for us to keep in touch
with others.
A. choice B. surprise C. progress D. difference
4. --- You _________ park here! Look at the sign, it says “No parking”.
--- Sorry, I didn’t notice that sign just now.
A. won’t B. needn’t C. mustn’t D. couldn’t
