单项选择题
I don't think it advisable that Mark ______ to the research work since he has no practical experience in this field.
单项选择题 It is said that the ______ of some of the state-owned companies can't meet their expenditure.
单项选择题 Kelly always spends more money than ______ to be spent.
单项选择题 If only I ______ the petrol before we started out. Now I have to push the car to the road side.
