But how much do we understand about this complex force (31)______ can kill and spread fear?
A. what
Đáp án B
Giải thích: Chỗ trống cần điền là một đại từ quan hệ bổ sung ý nghĩa cho cụm từ “this complex force” nên đại từ chỉ vật “which” là phương án thích hợp nhất. Lưu ý ta không thể dùng “what” vì mệnh đề quan hệ không có hàm ý nghi vấn, dấu chấm hỏi là của cụm từ “how much” ở đầu câu.
The sulfurous smoke from factories and power stations mixes with rain clouds and gets blown by the wind and then falls as acid rain (5) _____ destroys lakes and forests.
On this occasion, 47 people were killed, even though, (35)______ in 1987, the weather forecasters issued accurate warnings.
This means that your success as an employee will depend on your ability to communicate, with people and to (32) _____ your own thoughts and ideas to them so they will both understand what you are driving at and be persuaded.
The captain of the party, Commander Cousteau, spoke of the possibility of (35)______ the seabed.