I don’t think the risk they took ______ the poisonous snake is worthwhile.
| A．being caught | B．of catching |
| C．caught | D．to be caught |
I won’t give you such help ______ you tell me the truth. It’s beyond my ability.
| A．when | B．since | C．if | D．even if |
---Mary has been trained hard for the last two years.
---______ she did so well at the track and field meet yesterday.
| A．No doubt | B．No question | C．No wonder | D．No problem |
When ______ comes to research into heart disease and its effects on the body, we do not have adequate substitutes for the use of animals.
| A．that | B．it | C．this | D．what |
One of the best ways for people to keep fit is to ______ healthy eating habits.
| A．grow | B．develop | C．increase | D．raise |
The building around the corner caught fire last night. The police are now ______ the matter.
| A．getting through | B．worki ng out |
C．looking into | D．watching over |