26. —Who______ it be that is knocking at the door?
—It ______ be Father, but I’m not sure.
| A．can; must | B．can; may | C．must; can | D．may; must |
---When will the plane leave?
---It ________ very soon.
| A．leaves | B．is leaving | C．has left | D．had left |
We got up very early this morning _________ we could get there in time.
| A．in order to | B．so | C．that | D．in order that |
I refuse to accept the blame for something ________ was someone else’s fault.
| A．what | B．who | C．that | D．as |
The man _______ at the meeting was Mr. Wang.
| A．spoke | B．who spoke | C．was speaking | D．who speaking |
I live in a room _______ window faces south.
| A．its | B．whose | C．which | D．that |