The girl ________at the party yesterday is missing today.
These problems, ________ will seriously affect the growth of teenagers and even the nation’s future.
------________ to many people’s expectation, the 2009 UN climate Change Conference didn’t achieve any specific goals. ------ Yes, it’s really disappointing.
. Put the books back _______ they belong after you have finished them.
. If you head ________ to Beijing , the Summer palace is______ for tourists.
It’s difficult to _______ a conversation with someone who only says “yes” and “no”.