51. They planned to go to Beijing for sightseeing, but because of their daughter’s unexpected illness they had to stay at home _____.
| A．instead | B．really | C．however | D．Though |
I invited Joe and Linda to dinner, but ______ of them came.
| A．neither | B．either | C．none | D．both |
If he continues to steal, he is most _____ to end up in prison.
| A．possible | B．probably | C．likely | D．perhaps |
In face of ____ failure, it is the most important to keep up ____ good state of mind.
| A．/; a | B．a; / | C．the; / | D．/; the |
Listen to the two girls by the window. What language ____ ?
| A．did they speak | B．were they speaking |
| C．are they speaking | D．have they been speaking |
Hurry up! Alice and Sue are waiting for you at the school gate.
-Oh! I thought they _______ without me.
| A．went | B．are going | C．have gone | D．had gone |