We must remember the health and safety of our oceans is our individual responsibility, _______ that we can’t afford to ignore.
A. one B. that
C. what D. who
Care of the soul is a gradual process ______ even the small details of life should be considered.
A. what B. in what
C. which D. in which
What puzzles me most is why so many students bury themselves in piles of maths exercises _________they should spare some time to reflect on their previous mistakes.
A. once B. unless
C. when D. though
_______ to a task calls for perseverance and concentration, if you wish for the final success.
A. Committed B. Committing
C. Being committed D. To be committed
— Have you seen the cell phone I left here just now?
— No, sir. I _______ my English composition.
A. was polishing B. had polished
C. would polish D. have polished
Huawei is a global leader in telecoms with a great range of smart products to offer, many of __________exported abroad.
A. them B. which
C. it D. whom
