The Internet is widely used,which___________the development of English.
----Mary had a wonderful time at the party. ---- ________, and _________.
A driver should __ the road when .A concentrate on; drive B. concentrate in; driving C. concentrate to; drove D. concentrate on; driving
Helen always helps her mother even though going to school ______ most of her day.
Tom is good at his work, but he seems to _____ confidence.A lack B lack of C lacking in D short of
Peter received a letter just now ________ his grandma would come to see him soon.