—do you go to work every day?—By bike.
-There ______ many trees at the foot of the mountain.--But now they are slowly disappearing because of human activities.A.is used toB.used toC.used to be
The stone bridge ________ was built in Song Dynasty was repaired last month. A.that B.when C.where
–What do you think of the talk show last night? --I didn’t watch it.I ______ mum with some chores. A.helped B.was helping C.have helped
It’s well-known that learning English well _____ time and efforts. A.requires B.wastes C.takes
Do more exercise, _____ you’ll have a strong body. A./ B.or C.and