He would have given you more help, if he ________ so busy.
B
本题考察与过去事实相反的虚拟语气。
Studentsshould_____theirowninterestsaswellasdotheirschoolwork.
Jennycomplainedthatthehospital________hertoomuchforthetreatment.
_______foryourlaziness,youcouldhavefinishedtheassignmentbynow.