— Why? Tom, your shirt is so dirty!
— Mum, I ＿＿ my storeroom downstairs。
| A．cleaned | B．have worked | C．was cleaning | D．have been cleaning |
English is difficult __________ well in a short time.
| A．to learn | B．learning |
| C．to be learned | D．learn |
Paul doesn't have to be made __________. He always works hard.
| A．learn | B．to learn |
| C．learned | D．learning |
The careless driver is __________ for the traffic accident that __________ yesterday.
| A．to blame; happened | B．to blame; was happened |
| C．to be blamed; was happened | D．to be blamed; happened |
It is often __________ that human beings are naturally equipped to speak.
| A．said | B．to say |
| C．saying | D．being said |
Linda, make sure the tables __________ before the guests arrive.
| A．be set | B．set |
| C．are set | D．are setting |