Put the verbs in brackets into the Present Perfect or the Present Perfect Continuous 

We (meet) before? I often (see) his name in the papers this year. I (try) to catch the waiter’s attention for about 15 minutes now. She (study) English for a year and (learn) many words and expressions. I (not hear) about him since yesterday. I (look) for him since I finished my lesson but I (not find) him. I (be) in his office and to the laboratory but he isn’t there. ‘Hello, Sven. You (see) Alex yet?’- ‘No, I (not be) to the shop floor today. I (talk) on the phone to our clients all morning.’ I (be) up here since about six. I (wander) around for hours. I (come) to you to invite you for a ride in the car. I expect these young men (inform) you who I am. I really don’t know what you (do) there all this time. And that’s where they (stay) ever since. They (struggle) with this problem for about a month and they (solve) it at last. They (discuss) the case for hours but (be) unable to come to any decision. You (listen to) gossip. The things you (hear) are quite impossible. I (wait) here since 10 o’clock. Nobody (look) in here. I (tell) you so for years but you never (pay) any attention. She (do) shaping since September and her figure (improve) remarkably. You (ask) him this question for a week and still he (not answer) you.