Premier Li Keqiang delivered a speech at the conference, _________ university graduates to start their own business.
| A．encouraging | B．to encourage |
| C．having encouraged | D．encouraged |
English is ___ useful language.
| A．a | B．an | C．the | D．/ |
The Chinese teacher looks so pale. She ___ be ill.
| A．must | B．mustn’t | C．can | D．need |
---Would you like me to carry the box? ----_____.
| A．Yes, I would | B．Yes, I'd like to | C．It’s pleasure | D．No, thanks. I can't manage it myself |
---Shall I show you how to write? ----_____.
| A．Yes, of course | B．Thank you | C．Not at all | D．You’re welcome |
___ is everyone’s duty___ the law.
| A．That; do obey | B．It; to obey | C．That; obeying | D．It; obeying |