Only twenty percent of the work ______ done yesterday.

单项选择题Not only Tom but also Alice and Mary ______ busy.

单项选择题—So you missed the meeting. — ______ . I got there five minutes before it finished.

单项选择题Neither Mary nor her brother ______ good at singing.

单项选择题It is chairman of the department ______ the teaching staff elected him.

单项选择题Neither he nor I （） from Canad

A. We are from Australia.A. is
B. are
C. am
D. be

单项选择题He tried many times to sneak across the border to a neighboring country,______ caught each time.

单项选择题All ______ has already been done.

单项选择题I wrote down his name and address （） I should forget it.

A. in order that
B, for fear that
C. so that
D. since

单项选择题I prefer ______ there doing nothing.

单项选择题在班级管理中，我们通常把班级的组织者、领导者和教育者称为( )。