Students are encouraged to _________ the design competition for robots at the university.
| A．take part | B．operate | C．join to | D．participate in |
However busy he is, the young man will go to the country to see his granny _____.
| A．every few days | B．every a few days |
| C．each few days | D．each a few days |
Our neighbor offered to look after our baby while we were away, ____ was very kind of her.
| A．it | B．that | C．which | D．such |
I was walking in the street yesterday _____ I met with our football coach.
| A．before | B．when | C．until | D．since |
—Jessica is very bright and studies very hard _____.
—No wonder she always gets the first place in the examination.
| A．as well | B．as well as | C．either | D．also |
The two top students in Mr. Green’s class competed _____ each other for the highest marks.
| A．to | B．for | C．in | D．against |