He was caught in the heavy rain.That’s ___ he was ill.
| A．how | B．which | C．why | D．what |
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 |
---Why did Tom become wealthy this year?
---Because he sold _________________ he did last year.
| A．four times as many furnitures as | B．four times as furnitures many as |
| C．four times furniture as much as | D．four times as much furniture as |