The task is too much for him, so he can’t continue ______any longer. He must get some help.

He never gave up his dream and ______ achieved his goal.

John was one of the top students in our class, but believe it or not, he_______ passed the English exam last term.(西安市)

In the good care of the nurses, the patient is ____recovering from the heart operation

   So far the young man hasn’t had any success; ______ he will keep trying.