________Hard you may try, you can’t possibly persuade Tom to give up smoking, for he is so addicted to it.
It is obvious __________ he has no chance to go to college. A. that B. whether C what D. Which
From a _____ look in his eyes, I bet he didn't get the hang of the meaning of the poem.
__________ you trust him, you may as well follow his advice.
I don't want to cooperate with _________ is different from me in character.
It is ________ you to sleep in class. Under my impression, you are so energetic.