On the eve of Chinese Spring Festival, the number of electronic red envelopes given and received via WeChat ____ 1．01 billion, 200 times that of 2014．
| A．adds to | B．applies to |
| C．appeals to | D．amounts to |
— You ought to have called her yesterday . — Yes , I know I ____ .
| A．ought to | B．ought go have | C．ought have done | D．ought to have called |
— Would you please go to the cinema with me ? — Yes , I ____ .
| A．will | B．would | C．could | D．should |
I don''t think it any use taking with him , you ____ as well leave him alone .
| A．might | B．must | C．can | D．could |
Why ____ you keep troubling your mother with such question while he is busy .
| A．can | B．will | C．would | D．must |
I''m surprised that he ____ to help me when I needed his help .
| A．should refuse | B．would have refused |
| C．should have refused | D．may have refused |