The first thing you must remember is that in order to succeed, it is almost compulsory that you ______ optimistic.
There is even an animal whose tail will so that it can run away if someone grabs it.
Statistics show that shanghai subway lines will reach 350 kms by the end of this year, making the city No. 3 in the world subway length.
I admit I made a lot of mistakes in the work, and I will responsibility for them.
I would have paid a visit to you _______ possible.
A successful life is a life ____ challenges are met and difficulties overcome.