---Where will you start your work after graduation?---Mmm, it's not been decided yet. I ____ continue my study for a higher degree.
Smile is recognized as a/an _________ language, which can be understood by people all over the world.
The conference has been held to discuss the effects of tourism _______ the wildlife in the area.
Effective measures should be taken to ______ the rare species _______ being over-killed by human beings.
A good article should not only be rich in the use of language, but also it ought to be ________ organized.
I’m sorry you’ve been waiting for so long, but it’ll still be some time _______ Brian gets back.