Only after talking to two students ________ that having strong motivation is one of the biggest factors in reaching goals.
| A.I did discover | B.did I discover | 
| C.I discovered | D.discovered | 
There was a large box behind the door and Peter couldn't _____ falling over it in the darkness.
| A.help | B.resist | C.avoid | D.prevent | 
Our car _____ at the present speed until it reaches Qingdao at about nine o’clock tonight.
| A.went | B.is going | C.goes | D.will be going | 
Mr. Smith,________of the ________speech, started to read a novel.
| A.tired;boring | B.tiring;bored | C.tired;bored | D.tiring;boring | 
The boy failed four times, but he said he would try ___________.
| A.a five time | B.a fifth time | C.the five time | D.the fifth time | 
Recently there have been many occasions____ you have attended events on your own.
| A.where | B.which | C.when | D.why |