Thank you for sending us ____ fresh vegetables of many kinds. You have done us ____ a great service.
| A．不填；a | B．the；a | C．不填；不填 | D．the；不填 |
to her growing business, Mary has little time to take care of her family.
| A．Devoting | B．To devote | C．Devoted | D．Having devoted |
I felt very excited because it was the first time I on the stage.
| A．have acted | B．acted | C．act | D．had acted |
I can judge which part of China you come from you open your mouth.
| A．while | B．the moment | C．since | D．every time |
“ I don’t know what you mean, ” said Maryan angry voice.
| A．in | B．on | C．with | D．by |
When the fire broke out in the shop, people ran for the exists, in fear.
| A．screamed | B．scream | C．screaming | D．having screamed |