Choose the best answer.
If the tree hadn't been so high, he _____ it up to take his kite down.
A. could have climbed
B. climb
C. is climbing
D. climbed
Giải bởi qa.haylamdo.com
If + V(quá khứ hoàn thành), S + would/ could/ might + have + Ved/V3
=>If the tree hadn't been so high, he could have climbedit up to take his kite down.
Tạm dịch:Nếu cái cây không quá cao, anh ấy đã có thể trèo lên để lấy con diều xuống. (Thực tế là cái cây quá cao và anh ấy đã không thể trèo lên để lấy con diều xuống được.)
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