—Mr. Smith, I wonder if I could take Friday off?
— ______? It’s a bit difficult with so many people away on holiday, you know.
| A．How come | B．Is it necessary |
| C．Where are you going | D．Do you really have to |
It’s only ten minutes ______ the meeting but he’s still not here yet.
| A．for | B．at | C．by | D．till |
By the time he was twelve he ______ a chemistry lab of his own.
| A．built | B．has built | C．had built | D．was building |
David jumped _____ to get the first ______ the beginning of the sports.
| A．enough high; in | B．enough highly; in |
| C．high enough; at | D．highly enough; at |
Who is the singer ______ you like best?
| A．that | B．who | C．whom | D．which |
Whose turn ___ the cleaning?
| A．is it doing | B．is it to do | C．is doing | D．is to do |