According to the recent research,heavy coffee drinking and heart attack is not necessarily___and effect
| A．reason |
| B．excuse |
| C．question |
| D．cause |
Sorry! I can’t play outside, with much homework ________.
| A．finished | B．to finish | C．finishing | D．to be finished |
The flowers will die soon unless often ________.
| A．watering | B．to water | C．water | D．watered |
The report shows that we’re making some progress but ______ we need to make greater efforts.
| A．that | B．whether | C．what | D．why |
A good idea ______me! Which of the following is Not Right?
| A．struck | B．occurred to | C．came upon | D．happened to |
A number of tests have been conducted to _________ that these drugs have no side effects.
| A．find out | B．look for | C．make sure | D．work out |