单选题 They felt ______ that they hadn’t taken action to prevent this accident from happening.

单选题 When ______ into a new market, you must consider the cultural differences.

单选题 The ______ of the birthday cake are decorated (装饰) with cream and fresh fruit.

单选题 It is ______ that bus drivers deeply care about the safety of their passengers.

单选题 It is a Chinese custom to ______ the color red with celebrations.

单选题 My grandma has a good memory and can ______ the details of what we talked about some 20 years ago.

单选题 The Summer Palace ______ a great number of tourists from all over the world every year.

单选题 The whole ______ of building the house is expected to take 10 months.