These engines ______ by hand, now they ______ by electricity.
A: used to be started; are started
B: used to start; are started
C: used to be started; start
D: used to start; start
A: used to be started; are started
B: used to start; are started
C: used to be started; start
D: used to start; start
举一反三
- The manager ordered the work ______. A: start at once B: to be started at once C: to start at once D: at once started
- He ordered the work (). A: started at once B: to be started at once C: to start at once D: at once start
- The doctor recommended that Mary ________ the health program as soon as possible. A: started B: will start C: start D: have started
- Youhadbetter_____________atonce. A: to start B: started C: start D: starting
- The young man still denied（）the fire behind the store. A: start B: to start C: having started D: to have started