1.thoughtful (形容词)深思熟虑的
2.abilities (名词复数形式)能力
3.The boy could ride a bike at the age of five.
= The boy (was able to) ride a bike at five.
注:be able to do sth = can do sth“能够做某事”,此题为一般过去时.
1.thoughtful (形容词)深思熟虑的
2.abilities (名词复数形式)能力
3.The boy could ride a bike at the age of five.
= The boy (was able to) ride a bike at five.
注:be able to do sth = can do sth“能够做某事”,此题为一般过去时.