I think ________ good knowledge of English is ________ great help when you are traveling around the world.
| A．不填;a | B．a; a | C．a; the | D．a; 不填 |
I wonder what time lunch is_______ in your school.
| A．given | B．taken | C．served | D．eaten |
No ________ what you say, _______exists in three states.
| A．matter…matters | B．matter…matter |
| C．matters…matter | D．matters…matters |
He ________ the world record.
| A．failed to break | B．failed to breaking | C．failed breaking | D．failed broken |
You may use the book as you like, _______ you keep it clean.
| A．unless | B．so long | C．as long | D．so long as |
"Do you have any clothes to ______, Tom?" mother asked.
| A．wash | B．washing | C．be washed | D．washed |