At that time, the calculator was a great ______ / ɪn'venʃn/.
| A．invent | B．invitation |
| C．invention | D．inventor |
The boy didn't run _______to catch the bus.
| A．fast enough | B．enough fast |
| C．quick enough | D．enough quick |
It is ____ useful book. ____ book is on her desk.
| A．a, The | B．an, The | C．the, A | D．an, The |
--- Do you like watching Luneng Team play soccer?
--- Yes, _______ great players they are!
| A．How | B．What |
| C．What an | D．How a |
It’s a bad habit to ______ what you can do today until tomorrow.
| A．write down | B．put off |
| C．give away | D．worry about |
Over $30,000 ______ for a children’s hospital by a British girl several months ago.
| A．is raised | B．was raised |
| C．will be raised | D．has been raised |