Achieving a high degree of proficiency(精通)in English as a foreign language is not a mysterious _______ without scientific basis.
“Shall we stop for lunch _____ shall we drive on?” “Let’s stop for lunch, but the driver can’t drink _____ drive.”
____ you work, you must always serve the people heart and soul.
____ makes mistakes must correct them.
I’ll discuss it with you ____ you like to come.
—I don’t like reading watching TV.What about you? —I don’t like reading all day, I 1ike watching TV plays.