These are his trousers. Mine over there.
| A．is | B．am | C．are | D．was |
is your birthday?
| A．Which | B．When | C．How many | D．Where |
There a lot of public signs in the park now.
| A．are | B．is | C．has | D．were |
Last Saturday, we the Blacks’ house in the country.
| A．watch | B．visit | C．watched | D．visited |
The camera in my school bag a moment ago.
| A．was | B．were | C．is | D．are |