According to Professor Johnson,we don't have to read the book if we don't want to,as it is ______.( )
worthwhile
necessary
optional
serious
()A company ______profits from home markets are declining may seek opportunities abroad.
We’ll reach the sales targets in a month _______ we set at the beginning of the year.(2014)
Liao Fan, a Chinese actor, finally got to know __ real success tastes like when he won the prize for Best Actor at the 64th Berlin film festival.
It is obvious ______ the local government can do to protect the environment for the next generations.
People often have this belief _______ development is bad for the environment, but this does not have to be true.