Don’t be in a hurry. We are supposed ___
题型:选择题
问题:
Don’t be in a hurry. We are supposed ____________ this problem step by step.
A.solving
B.to solving
C.to solve
D.solve
Don’t be in a hurry. We are supposed ____________ this problem step by step.
A.solving
B.to solving
C.to solve
D.solve