James has put on so much weight recently that hismother has to ______ all his trousers to his measure

You needn’t take a taxi to go to the station because it is ____ walking distance here.[ ]

John said he wasn’t disappointed at the result of the basketball game，but the look on his face________him________

Some scientists believe that ________ is no doubt ________ a cure for AIDS will be found.

Let’s go to the zoo.—____