Question

主谓一致 能答几个答几个,1.The first exercise should be done in class an

Answer 1

1 B

------如果是the other,就是 is to be done.the rest == the others except the first .

2 A

------Careless and untidy writing,因为writing是单数概念,而Careless and untidy只是定语,不能决定单数或者复数.

3 A

------ == There is THE AMOUNT OF only two pounds of butter and a few packets of tea left.

你的句子里面,THE AMOUNT OF 习惯性地被省去了

4 B

=== 把 that you should not have let the secret out 放在句子开头,理解起来就容易了：

( That you should not have let the secret out ) APPEARS to be your mistake.

（-- - -）中的内容是主语-------做单三处理+ appears + -- - - -.