【題目】He can’t state clearly how long he has ___________ the bicycle?

【題目】Look! There is a cat, two _______ and four _______ in the picture.

【題目】The sign warns us not to (向左轉(zhuǎn)).

【題目】There used to be a few houses on side of the road, but now there are .

【題目】—Let's help to find the (lose) cat.—All right.

【題目】—Which is _______, the sun, the moon or the earth?

【題目】People are warned_____out as much as possible because there will be smog during the coming three days.

【題目】My mother prefers coffee ____ milk. She thinks it tastes much better than black coffee.

【題目】Can you help me ______my English?

【題目】There _______ two football matches here tomorrow.