$\text{1.}$  How often do you play chess at the chess club?

→ How often + do/does + S + V-inf + O ( hỏi mức độ thường xuyên ) 

$\text{2.}$ Which language do you want to learn as your second language?

→ Which + N : cái nào 

$\text{3.}$ What are Daisy and Peter planning to do this weekend?

→ What : cái j/vật j/...

→ What + Aux + S + V + O ? 

$\text{4.}$  Why can't your closest friend go to school today? 

→ Why + Aux + S + V + O ? ( hỏi lí do ) 

$#Keisha$

1. twice a week: tần suất

→ How often do you play chess at the chess club?

2. learn Japanese: học ngôn ngữ

→ Which language do you want to learn as your second language?

3. go camping: làm cái j

→ What are Daisy and Peter planning to do this weekend?

4. because she is ill: lí do

→ Why can't your closest friend go to school today?