单项选择题 We offer these goods subject（）their being unsold on receipt of your order.

单项选择题 We shall appreciate it if you will see to it that amendment is cabled（）delay.

单项选择题 The seller may cancel the contract and reserve the right to claim（）buyer’s breach of contract.

单项选择题 The firm handshake with eye contact and smiling is an important first gesture of communication for any person，male or female ，（）to make an impression.

单项选择题 In（），shaking hand is normal when being introduced，and it’s also normal for two men kissing when they meet.