1. INTRODUCTION

2. DATA AND OBSERVATIONS  
2.1. The ALMaQUEST Survey  
2.2. Star Formation Tracers: MaNGA  
2.3. Molecular Gas Observations: ALMA  
2.4. Sample Classification  

3. RESULTS  
3.2. Relative Importance of $f_{\mathrm{gas}}$ and SFE in Quenching  

4. DISCUSSION  
4.1. Quenching Mechanisms  
4.2. Comparison with Simulations  

5. SUMMARY