___________ many times, but he still couldn’t understand it.
Jack must be helping his grandma to water the flowers,______?
— Why are the four students so happy?—______ in the science competition, they are awarded prize money totaling $ 20,000.
The weather turned out to be fine yesterday.You __the trouble to carry your raincoat with you.
The little boy who got lost decided to remain _____ he was and waited for his dad.
The more _____ you listen to the tape, the _____ you will find it to understand.