There was a time I couldn’t fall asleep almost the whole night.
| A．which | B．when |
| C．how | D．where |
_____ to too much sunlight, as is generally considered, will add to the potential of catching skin cancer.
| A．Being exposed | B．Exposed | C．Exposing | D．To expose |
There was a nice little gift for everyone, with a suitable poem _____ to it.
| A．attached | B．to be attaching | C．to attach | D．attaching |
I’m sorry you’ve been waiting so long, but it’ll still be some time _____ Brian gets back.
| A．before | B．since | C．till | D．after |
Jack is a student and studies at the NO. 1 Middle School, _____.
| A．it was the same with Mike | B．so it is with Mike |
| C．so is Mike | D．so does Mike |
Lawrence Craven, a doctor from the USA, is the author of several published reports, one of _____ introduced the idea in 1953 _____ aspirin could reduce the risk of heart attacks.
| A．them; when | B．which; that | C．what; that | D．which; when |