China has the_______ population in the world.
| A．largest | B．most | C．more | D．highest |
I’m a new comer here, so I had a lot of problems_______ the bus stop.
| A．looking for |
| B．to look for |
| C．find |
| D．finding |
How long has he_______the job?
| A．found | B．changed | C．had | D．got |
—_______ have you been studying English?
—Since 2002.
| A．How often |
| B．How long |
| C．How many times |
| D．How old |
It’s cold here. Please keep the window_________.
| A．close | B．closed | C．closing | D．closes |