9．The song reminded me of the days when we spent together several years ago.
which/that
10．He thought she would keep her words .
word
11．They have ∧married for 20 years.
been
12．I promised that I will do my best.
would
13．I don’t doubt if he is a good teacher.
that
14．I found ∧difficult to follow my teacher in the first English class.
it
15．I used to get up early, but now I am used to sleep until 11 am.
sleeping
16．The earth was still just a cloud of dust for several billions years after the “Big bang”.
billion
9. He couldn’t have his friend getting away with tell people lies！
telling
10.People love to get together to eat, drink and have a fun with each other.
(去掉a)
略