I looked up and noticed a snake ______ its way up the tree to catch its breakfast.
A.to wind B.wind C.winding D.wound
.Mr Smith, _______ of the ________ speech, started to read a novel.
A.tired; boring B.tiring; bored C.tired; bored D.tiring; boring
The ______ boy was last seen ______ near the bank of the lake.
A.missing; playing B.missing; play C.missed; played D.missed; to play
Only by increasing the number of doctors by 50 percent properly in this hospital.
A.can be the patients treated B.can the patients be treated
C.the patients can be treated D.treated can be the patients
It was only after he had read the papers ________ Mr. Gross realized the task before him was extremely difficult to complete.
A.when B.that C.which D.what
I got to the office earlier that day, ________ the 7：30 train from Paddington.
A.caught B.to have caught
C.to catch D.having caught
