双基限时练(五) unit 2 part ⅱ 基 础 夯 实 ⅰ.用所给动词的适当形式填空 1．he was careless. if he ________ (put) the gold watch in a safe place, he ________ (not lose) it. 答案 had put; wouldn't/shouldn't/couldn't/mightn't have lost 2．he's been away since last sunday. if he ________ (be) here yesterday, he ________ (attend) the concert. 答案 had been; would/could/might/should have attended 3．if you had posted the letter, joan ________ (receive) it last
