By 5:30 yesterday afternoon he ______ (finish)writing the laboratory report．

填空题去掉is

单项选择题Where had the missing coin been ( )

填空题Since last August，the old lady ______ (have)bad headaches three to four times a month．

单项选择题Ⅱ. 完形填空 Cloze

填空题As soon as he came into the office, he ______ (shake)hands with every one of US．