One ______ easily lose his way when he visits or comes to a new place.
A. may B. must C. need D. should
You will surely realize your dream of being a scientist ______ you give it up halfway.
A. though B. if C. unless D. since
This pet shop is losing its customers ______ its staff work slowly and often make mistakes.
A. so B. because C. until D. although
Julia looked very ______ when she finished her performance and said thanks to the audience.
A. happily B. quietly C. lovely D. seriously
The students ran to the playground as ______ as they could to cheer for their favorite team.
A. fast B. faster C. fastest D. the fastest
Most of Frank’s books, usually with ______ pictures in each book, are for young children.
A. hundred B. hundreds C. hundred of D. hundreds of
