I’m so glad to see you back, Lucy. How long _______at your grandma’s?
| A．had you stayed | B．did you stay | C．have you stayed | D．would you stay |
--- Hi, Lucy, have you seen the newspaper on the table?
--- Oh, yes. I ____ it but I can’t remember where I put it.
| A．read | B．would read | C．am reading | D．had read |
____ directly to the sun in summer will do great harm to our skin.
| A．Be exposed | B．Being exposed | C．Exposing | D．Exposed |
It rained heavily overnight and not until this morning____.
| A．did it stop | B．had it stopped | C．stopped | D．it stopped |
--Do you know what caused the accident? --- No, not yet. The matter _____.
| A．is being looked into | B．was being looked into | C．looked into | D．is looked into |
A new museum is being built in our city and it’ll be accessible to the citizens when___ next year.
| A．completing | B．is completed | C．to be completed | D．completed |