单项选择题
W: How are you getting on with your experiment M: In spite of my continuous failure, I have already made some progress.
A．It is going on well. B．It has not progressed smoothly. C．It will soon be finished. D．It may have to be stoppe
A．The shop assistant approaches you with a greeting in a friendly way. B．You must buy some books which you don’t like. C．Your will feel satisfied because no one will interrupt you. D．No shop assistant will approach you unless his service is calle