As we all know, Jack is experienced _____ the problem of this kind.
A: to work out
B: at working
C: at working out
D: for working out
A: to work out
B: at working
C: at working out
D: for working out
举一反三
- The new trend here is _______ in the cold! A: work out B: working out C: working
- When the teacher praised him for working out the math problem, Jack looked______________________ (pride).
- When the teacher praised him for working out the maths problem,Jack looked________about at his classmates.
- -- Where is Matthew now?He ________ at the gym. A: works out B: was working C: worked out D: is working out
- It is clever ______ you ______ out the problem. A: for; to work B: B. of; working C: C. of; to work