He was able ________ computers at a time when few children or adults could.
A: to using
B: to used
C: to use
D: used to
A: to using
B: to used
C: to use
D: used to
举一反三
- He was able ________ computers at a time when few children or adults could.
- Usually computers ______ to search the Internet. A: use B: are using C: are used D: used
- He tried ______ a new microphone and was able to make himself heard. A: to use B: to be used C: to using D: using
- If _____properly, time is the money in the bank. A: using B: used C: to use D: use
- At no time will China be the first nation ______ nuclear weapons. A: used B: which used C: using D: to use