The construction of the laboratory ________ by the end of July. A: must be completing B: must complete C: must have complete D: must have been completed

Among the following conditions, ( ) is not the prerequisite of an effective offer. A: The contents of the of the offer must be very clear B: The offer should be made to one or more specific persons C: It must indicate the intention of the offeror to be bound D: The main trade conditions of the must be very complete

The retired worker left the noisy city for a life of ( ) in the country. A: peace B: silence C: stillness D: tranquility

Instructions: Complete the sentence with the -ing form or to + infinitive form of the verb in brackets. 5. After_____ (set) up a website with their music, they've got more fans than ever. ______

Li Na is ______ famous ______ all the tennis fans in China know her. A: too; to B: enough; to C: as; as D: so; that