Mrs. Smith was so ___ about everything？／

Mrs. Smith was so ___ about everything ？

Mrs. Glitch was so about everything that no serv？

Mrs. Glitch was so about everything that no serva

Mrs. Smith was so ___ about everything that no ser

Having heard so much about Mr. Smith, they were ______ to meet and have a chat with him.A．

The problem was so complicated that Mr. Smith had to______his brains.A．crackB．checkC．rackD