Unless you ____ the scaffolding before climbing, it might collapse. If the weather ____ too windy, working on the roof can become dangerous. You won’t be allowed to climb the tower unless you ____ received proper training. Unless there ____ proper ventilation, toxic gases can accumulate in the septic tank. ____ you ____ the tank without a gas detector, you ____ suffocation. The worker must not enter the confined space ____ another person ____ outside. Unless you ____ the oxygen level first, it cannot be safe to go inside. You can't operate this machine unless you ____ a license. ____ you don’t secure the ladder properly, it ____ slip while you’re climbing.

Conditional clause type one and unless

In
Nhúng

Bảng xếp hạng

Phong cách trực quan

Tùy chọn

Chuyển đổi mẫu

Bạn có muốn khôi phục tự động lưu: không?