( )1.-Would you like to come to dinner tonight?
-I will ____ I’m not too busy.
A. and B. if C. so D. but
( ) 2. If the green light isn’t on ,wait ______a minute.
A. in B. at C. for D. to
( ) 3. Come here , please! I’ll take a phone ______you.
A. in B. at C. for D. to
( ) 4. She sent me some recordings by _____.
A .hard disk B. email C. file D. recorder
