1．We are likely ____________(place) a large order with you if the price is reasonable.
答案：to place
2．I found ____________ impossible to finish all the work in only three days.
答案：it
3．They have been looking for ____________(science) methods of farming since ten years ago.
答案：scientific
4．You can practice under the ____________(guide) of someone who’s good at the language.
答案：guidance
5．These plays were a popular form of ____________(entertain) in the 1920s and 1930s.
答案：entertainment
6．Lily used to exercise ____________(regular), but I seldom see her exercise now.
答案：regularly
7．Workers in some industries have their hearing ____________(harm) by the noise of the machines.
答案：harmed
8．Later, he made ____________ suggestion that we should go out for a walk.
答案：a
