The best way to explore _______ countryside is on _______foot.
Do you have any letters ______ today? -I had my son _______it this morning .Thank you anyway.
_____more time, he’ll make a first-class tennis player.
I meant ____,but when I was leaving I couldn’t find her anywhere.A.to do B. to C. doing D doing to
While building a tunnel though the mountains,________.
Will those ____the children from abroad come to the headmaster’s office?