Not having a good ________ of English can be a serious barrier to achieving your goals.
| A．demand | B．appreciation | C．command | D．experience |
--Look at those clouds!
--Don’t worry. _____it rains, we’ll still have a great time.
| A．What if | B．As if | C．Only if | D． Even if |
It’s known to us that Callum _____________ the local accent after talking with the native speakers.
| A．put up | B．picked up | C．made up | D．set up |
A mistake ______ have been made on our bill. We didn’t order any fish today.
| A．should | B．would | C．could | D．must |
As you wander through the streets, you see thousands of masks but you have no idea_____ the faces behind them look like.
| A． which | B．what | C． that | D．how |
_______ to carry out the plan in time, they will make careful preparations.
| A．Determine | B．Determined |
| C．Having been determined | D．Being determined |