15. An awful crash between an express train and a bus _____ , however, occur the other day in Russia.A. does B. did D. has to D. had to
The dress is really fashionable and eye-catching, but it is ______ too big for me.
My parents want me to take_________maths lessons at the weekend, but I want to play and have fun.
.—Have your working conditions improved? —No, _____ than before, I’m afraid.
These natural parks are very important for preserving many animals, which would _______ run the risk of becoming extinct.
People are always on the go , so they spend their weekend on housework .