develop|developed|developing

参加这门课程将帮助你发展沟通技巧。

Taking this course will help you ___develop your communication skills.

做家务有助于培养孩子的独立性。

Doing chores helps to ___develop children's independence.

好的学习者正在培养他们的学习技能。

Good learners are ___developing their study skills.

他患上了一种重病,失明了。

He ___developed a serious illness and became blind.