The thought ______ he might fail in the exam worried him a lot.
It took ______ building supplies to construct these energy-saving houses. It took brains, too.
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.