Question 29: Unless you wash the car, you _____ not drive it at the we

Question 29: Unless you wash the car, you _____ not drive it at the weekend.

• A. would
• B. B. could
• C. have to
• D. may

Cấu trúc câu điều kiện loại 1: If + S + V(s/es), S + will/can/shall/ may+ V(nguyên mẫu).
(- Mở rộng: Cấu trúc “unless” thay thế cho cấu trúc ” if  … not” (Trừ Khi, nếu … không). )