使顺利进行英文

to ensure the contract to be processed in a smooth way

It is on his way

successfully perform the contract 参考：（To take action in accordance with the requirements of; fulfill:履行：根据…需要而采取行动；满足：perform one's contractual obligations.履行合同规定的义务）

To ensure the contract to be performed in a smooth way.

so as to carry out the contract in a smooth way

go on wheels go with a swing went to town