The number of people invited_____40, but a number of them______absent for different reasons.
Sorry! I can’t play outside, with much homework ________.
The flowers will die soon unless often ________.
The report shows that we’re making some progress but ______ we need to make greater efforts.
A good idea ______me! Which of the following is Not Right?
A number of tests have been conducted to _________ that these drugs have no side effects.