Helen has got ________ it takes to be a great tennis player. In other words, she has the potential to become world famous.
| A．that | B．how | C．when | D．what |
When Justin didn’t ____ for lunch the next day, Mrs Foster became worried and called the police.
| A．give up | B．show up | C．make up | D．stay up |
If ____ in, the viruses can result in illness or even deaths.
| A．breathed | B．to breathe | C．breathes | D．is breathed |
Standing inside ____ lots of strange creatures with white skin and large black eyes.
| A．was | B．is | C．were | D．be |
—I have been waiting for you so long.
—Sorry, I have been in the library, _______ my friend look for some books.
| A．helped | B．helping | C．to help | D．help |
I think humour is a vital form of entertainment, ____ it makes us laugh and laughing keeps us healthy.
| A．when | B．after | C．if | D．because |