A, The pollution problem (get) worse over the last decade B, I (not/see) Jane for ages When I last (see) her, she (try) to find a job C, Alexander Graham Bell (already /invent) the telephone by the time I was born

Cách làm:
1. Điền đúng dạng của động từ trong ngoặc vào chỗ trống trong câu.
2. Chia câu thành các mệnh đề riêng biệt nếu cần.

Câu trả lời:
A. The pollution problem has got worse over the last decade.
B. I haven't seen Jane for ages. When I last saw her, she was trying to find a job.
C. Alexander Graham Bell had already invented the telephone by the time I was born.

C, Alexander Graham Bell had already invented the telephone by the time I was born.

B, I have not seen Jane for ages. When I last saw her, she was trying to find a job.

A, The pollution problem has gotten worse over the last decade.