Time ________ heal a broken heart. After five years, Steve seems to have got over the sorrow of losing his son.
A．should B．would
C．shall D．can
—David is often absent from class.
—Tell him he ________ answer for it if he goes on behaving like that.
A．shall B．might
C．would D．can
A hot balloon blew up in Egypt. There ________ something wrong with the quality of it.
A．may have been B．must be
C．need have been D．might be
There was something wrong with the network, or the email ________ earlier.
A．could have been sent B．might be sent
C．need have been sent D．must be sent
—________ you leave now? You only arrived an hour ago!
—Sorry, but so much homework is waiting for me.
A．Must B．May
C．Can D．Might
The parcel was a whole week late. How I wish I ________ air mail instead.
A．had chosen B．would choose
C．chose D．choose
