Studies show that people are more______ to suffer from back problems if they always sit before computer screens for long hours.
________ and we’ll get everything ready for the taking off.
Not until we have had a chance to discuss it thoroughly ________ perfectly.
—Have you been to the Great Wall?—Perhaps not in my memory.________,it might have been during my early childhood.
More than a dozen students in that school ________ abroad for further study every year.
—Mum,I am afraid I won’t do well in the coming test.—Honey,________more careful,________you will make it.