The numbers that researchers get from the experiments can be _______, just like number puzzles.
| A．disappointing | B．inspiring | C．worrying | D．confusing |
________ our achievements, we are firmly convinced we’ll be able to achieve the final victory.
| A．Looking back at | B．Looking forward to | C．Looking through | D．Looking into |
We should protect the environment, for plenty of fresh air ________ to good health.
| A．adjust | B．contributes | C．distributes | D．attributes |
“If _________ much time, I will teach you how to ________ the clothing store,” the boss said to me.
| A．given; run | B．given; control | C．giving; run | D．giving; control |
_________, I always feel I want a few more days.
| A．However long is a vacation | B．However long a vacation is |
| C．However is a vacation long | D．However a vacation is long |
--- Bake is intelligent and experienced.
--- That is ________ his advantages lie in applying the post.
| A．what | B．how | C．where | D．why |