1.--How long have you known the doctor?
1.--How long have you known the doctor?
--__________he helped me 3 days ago.
A.When B.Before C.Because D.Since
2.How long may I ________ this book?For about a week.
A.borrow B.lend C.keep D.be kept
3.--How long have John _________ Mary?
--I do not know and I even did not know they had _________.
A.married,got married B.married with,married
C.been married to,got married D.been married with,got married
4.-___________ lonely space?
-___________ there was nothing but sand there.
A.How,In the past B.What,In the past few years
C.How,During the past few years D.What a,In the past
5.-How does your sister come here?
-She often comes home _______ Tom's car,not ________ train.
A.by,by B.with,with C.by,in D.in,by
6.-I do not knoe what is wrong with it.
-Do not worry.I will show you ________.
A.how to do it B.what to do it
C.to do it D.to do what