Pine trees, of which there are almost one hundred _____, are found throughout the North Temperate Zone.
A.species | B.samples | C.specimens | D.Standards |
This is the very plan for our May Day holiday _______ was made by our classmates.
A.which | B. that | C.who | D.what |
Is _____ necessary to take off our shoes when we enter the computer lab?
A.this | B.it | C.everyone | D.he |
____ matters most in learning English is enough practice.
A.What | B.Why | C.Where | D.Which |
Only whenin the afternoonable to leave.
A.the match was over; they were | B.was the match over; were they |
C.was the match over; they were | D.the match was over; were they |
There are 51 students in Class Three, _____ failed in the test.
A.all of which | B.all of them | C.none of whom | D.none of them |