________ is quite natural,a beginner can't read the books written in English very quickly.
He lifted the receiver as soon as the telephone rang but it on the table at once. A. lay B .lied C laid D lain
smoking is a bad habit. You should it.
It is thein this country to go out and pick flowers on the first day of the spring.
Stay awake!You should know that it ________to sleep in class.
The problem in today’s parenting environment is ____________ many believe it is their job to solve all their children’s problems.