– I have a letter __________ but I’m too busy.
– Why not have your son __________ it for you?
| A．to post; do | B．posted; do |
| C．to post; to do | D．posted; to do |
– I have a letter __________ but I’m too busy.
– Why not have your son __________ it for you?
| A．to post; do | B．posted; do |
| C．to post; to do | D．posted; to do |
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