21. — I'm going to San Francisco for a couple of days.
— ___ . I wish I could get away for a while.
A. It doesn't matter B. Forget it
C. I really envy you D. I can't agree more
22. I woke up with ________ bad headache, yet by ________ evening the pain had gone.
A. the; the B. the; an C. a; the D. a; an
23. The three of us ________ around Europe for about a month last summer.
A. travelled B. have travelled C. had travelled D. travel
