I think it’s impossible for us to work out the plan in just two days. It’s too difficult.—You’re right. We can’t be _______ careful and hard while working on it.

What do you think of teaching, Bob?— I find it fun and challenging It is a job ________ you are doing something serious but interesting[ ]

Daniel , remember to close the door before leaving the house.—_________.

Jack is really a brave guy — So he is

I don’t like this new model of App6 +; _________I had enough money, I wouldn’t buy it.