第一节：单项填空（共15小题，每题1分，满分15分）
1.i was disappointed that nobody burst into ___when i finished my joke.
a laughter b to laugh c laughing d laugh
2.it seems quite ___to expect a student to acquire so many fresh skills within such a short period.
a urgent b available c scary d ridiculous
3.--so how is your roommate?
--she really ___. she is always making loud noises at midnight and when i remind her ,she always makes rude remarks.
a turns me over b turns me down c turns me off d turns me out
