He should （ ） hard .
A: working
B: work
C: to work
A: working
B: work
C: to work
举一反三
- ?________, and you will be successful.: If you work hard|To work hard|Work hard|Working hard
- _________hard, he would passed the exam.( ). A: If Tom were to work B: Had Tom worked C: Should Tom work D: Were Tom to work
- ( )hard means you may have to（ 不得不） play hard sometimes, to keep a balance. A: Working B: Work C: working D: To work
- If a man _____ succeed, he must work as hard as he can. A: will B: is to C: is going to D: should
- If a man ____ succeed, he must work as hard as he can. A: will B: should C: is going D: is to