27、---I promise that she _____ get a nice present on her birthday.

---Will it be a great surprise to her？

A．should        B．must         C．would          D．shall

26、It was in the small house ______ was built with stones by his father ______ he spent his childhood.

A．which; that      B．that; which          C．which; which         D．that; where

24、Put on more clothes．You ____ be feeling cold with only a shirt on．

A．can                 B．must               C．should               D．ought to

22、--Why does the lake smell terrible?  

--Because large quantities of water       ．

A．have polluted                                           B．is being polluted

C．has been polluted                                     D．have been polluted

21、The loss has not yet been ______ accurately, but it is believed to be well beyond a hundred million dollars．

A．calculated            B．considered         C．completed          D．controlled

20、Every evening after dinner, if not        from work, I will spend some time walking my dog．

A．being tired        B．tiring               C．tired                      D．to be tired 

19、When he        the door, he found his keys were nowhere．

A．would open             B．opened            C．had opened            D．was to open