—Would you like to go to the party?—I’d like to, ____ I’m busy. I’m afraid I can’t join the party.
---I’m sure I will get good grades (成绩) in this exam. ---If so, I believe your parents will ______ the result.
The car is ________ expensive _______ he can’t buy it.
The problem is difficult for me work out.
Our teacher told us in the class.
Some colours make us _______ calm and peaceful.