- Dad. are you coming with us?
- I'd love to, but something unexpected_______ in my company and I have to go.
| A．would come up | B．comes up |
| C．was coming up | D．has come up |
When you take a plane, you_______ obey the rule to turn off your cell phone.
| A．need | B．must |
| C．may | D．could |
He was stopped when he tried to_______ on the queue.
| A．push in | B．turn in |
| C．give in | D．come in |
My English teacher is very knowledgeable_______ she has been to many countries.
| A．but | B．so that |
| C．because | D．when |
- What do you think of the traffic in our city?
- It's_______ than it used to be, but there's still a long way to go.
| A．worse | B．worst |
| C．better | D．best |