一
页数：P29
题目：第17题
This is the Association's most popular event,so ____ early to assure your
place.
(A) will register
(B) must register
(C) registering
(D) register
A:D
疑问：答案是D纯粹只是因为文意要表达现在要做的事吗
二
页数：P32
题目：第11题
Are you looking for place _____ your next conference? The Littleton Convention
Center offers a conenient location at an affordable price.
(A) hold
(B) holding
(C) will hold
(D) to hold
A:D
疑问 : 我选B 是因为想说会不会是关代的省略，如果是关代的省略，应该是 held
答案是to是不是 place的惯用语?
三
页数：P63
题目：第17题
Don't rush to the copier as the final revision is complete. _____ each
document carefully beforehahnd.
(A) Proof
(B) Proofs
(C) To proof
(D) Proofing
A:A
疑问:我选C想说 是不定词的修饰语 觉得选D也可以 是分词构句
不懂 为什么一个原型动词可以放句首