An American scientist and writer _______ coming to give us a lecture on English learning methods when he visits our school.
She was so angry and spoke so fast that none of us understood _______ he said meant.
______ medicine works in a human body is a question _______ not everyone can understand fully.
____ has helped to save the drowning girl is worth praising.
I had neither a raincoat nor an umbrella. _______ I got wet through.
Eat ______ cake you like and leave the others for ______ comes in late.