Helen was much kinder to her youngest son than to the others, __________, of course, made the others envy him.
| A．who | B．that | C．what | D．which |
More people will eat out in restaurants _____ they do today.
| A．than | B．when | C．while | D．as |
_____ hard she tries, she can hardly avoid making mistakes in her homework.
| A．Much | B．However | C．As | D．Although |
Poor _____ it may be, there is no place like home, _____ you may go.
| A．as; wherever | B．though; whenever |
| C．in spite of; when | D．that; wherever |
The child was __ immediately after supper.
| A．enough tired to go to bed | B．too tired to go to bed |
| C．so tired that he went to bed | D．very tired, he went to bed |
The history of nursing __ the history of man.
| A．as old as | B．is old than | C．that is as old as | D．is as old as |