12. I have been invited to a wedding __________ 14 February. A. in B. of C. on D. at 13. You don't seem very __________ about the party. Don't you want to go tonight? A. enthusiast B. enthusiastic C. enthusiasm D. enthusiastically 14. All __________, no matter how small, will be much appreciated. A. contribute B. contributed C. contributions D. contributor 15. I wish Susan__________harder for her examination. A. will work B. worked C. has worked D. works 16. Mary was really__________by the beauty of Hanoi. A. impress B. impression C. impressed D. impressive 17. Would you mind if I__________your dictionary? A. borrow B. am borrowing C. borrows D. borrowed 18. She __________a letter when the telephone rang. A. wrote B. was writing C. was written D. has written