Seeing the man on the bike with a boy at the front and the other at the back, the policeman signed _______stop.
The boss praised the young man for his hard work, though he ____ experience.
._____ in thought , he almost ran into the car in front of him .
I'll have you ______ English in six months .
I posted the letter some time _____ the week .
Take a taxi , _____ you'll miss your train .