According to scientists, our mental abilities begin to __________ from the age of 27 after reaching the highest level at 22.
Please do me a favour ---______my friend Mr smith to Youth Theatre at 7:30tonight.
______a certain doubt among the people as to the practical value of the project.
It’s the first time that he has been to Australia ,______?
昨日重现二———特殊句式(倒装、强调等) So sudden _____that the enemy had no time to escape .
At the beginning of class, the noise of desks______could be heard outside the classroom.