英语题，教教我！

A:It's very hot outside.But I can't find my sunglasses.
B:Are they o___the bookshelf. on
A:No,they aren't.
B:Are they i_____ your desk? in
A:No,they aren't.
B:Are they b_____ the two vases? behide
A:Oh,yes,they are.Thank you very much.
智力测试
(1)What is the letter(字母)_which can be seen_(能看到）twice in “every day”and four times in “every week”,yet only once in“a year”?
It is the letter“__________” e
(2)What _changes_(吧。。。变成)a pear into a pearl（珍珠）？
It is the letter“____________” l
这个句子有错误请把它改过来。
Are your brother going to do the high jump?Yes,he is. 开头的Are改为Is
改为同义句
I can make you a nice birthday cake.
I can make a nice birthday cake_________you. for

on in beside
(1)e
(2)l
for

on,in,behind
e l
are变成IS
FOR