单项选择题 There is no sign that the world economic crisis will lessen in the next few months, although a certain degree of recovery is in sight.

单项选择题 If either party wants to renew the contract, it should submit a written notice to the other party three months prior to the expiration of the contract.

单项选择题 For your safety, the electrical appliance can only operate when it has been correctly mounted on a dry and cool base.