一、单选题 1. Mark lost his bag last week, but his important things weren't in that bag. . Sounds like he didn't lose too many. ANot muchBLucky himCNo problemDThat's OK 2. This old train was sothat I spent too much time on it. AfastBcleanCslowDcheap 3.Excuse me. What's theto the first math problem?It's 13.AanswerBpriceCwayDnumber 4. Sir, here are your fish dumplings. Please enjoyThank you a lot. AitBthisCtheseDthem 5. What did you see just now?I saw the monkeysup and down in the big tree. ArunningBto runCjumpingDto jump 6. These strawberries taste very delicious Yeah. The studentsthem on the farm on vacation. ApickedBpickCare pickingDwill pick