The real threat of fraud(欺诈) on the Internet has highlighted the fact ________ consumers fear shopping on line.
| A．what | B．that | C．when | D．which |
----I thought you wouldn’t mind.
----Well, as a matter of fact I don’t, but you _____ me first.
| A．should ask | B．should have asked |
| C．must ask | D．must have asked |
----Did Jim come？
----I don’t know. He _______ while I was out.
| A．might have come | B．might come |
| C．mush have come | D．should have come |
----Why did you just sit and watch？
-----You _______ me.
| A．could help | B．should help |
| C．could have helped | D．must have helped |
----I called you yesterday. A woman answered, but I didn’t recognize her voice.
----Oh, it _____ my aunt Jean.
| A．must be | B．must have been |
| C．might be | D．can have been |
---I called you yesterday. A woman answered, but I didn’t recognize her voice.
----Oh, it _____ my aunt Jean.
| A．must be | B．must have been |
| C．might be | D．can have been |