81. Son started playing the piano two years ago.
→ Son has
82. The test was long and difficult, but I finished it on time.
→ Although
83. No cities in the world are cleaner than Singapore.
→ Singapore
84. Each football match has two forty- five- minute halves.
→ There
85. The villa is surrounded by the blue sea.
→ The blue sea
Loga
Sinh Học lớp 12
