请问

问 wèn HSK 1 #201

to ask / to inquire

请 qǐng HSK 1 #142

please / to invite / to treat (someone to a meal)

请假 qǐngjià HSK 1 #9,168

to request leave / to ask for time off

请求 qǐngqiú HSK 2 #1,636

to request / request

询问 xúnwèn HSK 5 #3,422

to inquire; to ask about

提问 tíwèn HSK 3 #5,561

to ask a question; to raise a question / to quiz; to question

请客 qǐngkè HSK 2 #6,402

to treat (sb to a meal) / to host

顾问 gùwèn HSK 5 #2,959

adviser / consultant

申请 shēnqǐng HSK 4 #1,632

to apply for / application

邀请 yāoqǐng HSK 5 #1,110

to invite / invitation